Google Open Source - All of Googles open source projects under a single umbrella
Vocalibrary - Pick up new words with everything you read. Improve your vocabulary with auto-generated flashcards.
Opensource Builders - Find open-source alternatives to commercial apps
Grammarly - Clear, effective, mistake-free writing everywhere you type.
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
Kidpography - Save your children’s calligraphy forever